EP2910530A4 - Air diffusion device, air diffusion method, and water treatment device - Google Patents

Air diffusion device, air diffusion method, and water treatment device

Info

Publication number
EP2910530A4
EP2910530A4 EP13846346.8A EP13846346A EP2910530A4 EP 2910530 A4 EP2910530 A4 EP 2910530A4 EP 13846346 A EP13846346 A EP 13846346A EP 2910530 A4 EP2910530 A4 EP 2910530A4
Authority
EP
European Patent Office
Prior art keywords
air diffusion
water treatment
treatment device
diffusion method
air
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP13846346.8A
Other languages
German (de)
French (fr)
Other versions
EP2910530A1 (en
Inventor
Shinsuke Furuno
Manabu Sasakawa
Fumihiro Kira
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Chemical Corp
Original Assignee
Mitsubishi Rayon Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsubishi Rayon Co Ltd filed Critical Mitsubishi Rayon Co Ltd
Publication of EP2910530A1 publication Critical patent/EP2910530A1/en
Publication of EP2910530A4 publication Critical patent/EP2910530A4/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/20—Mixing gases with liquids
    • B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
    • B01F23/231—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids by bubbling
    • B01F23/23105—Arrangement or manipulation of the gas bubbling devices
    • B01F23/2312—Diffusers
    • B01F23/23126—Diffusers characterised by the shape of the diffuser element
    • B01F23/231265—Diffusers characterised by the shape of the diffuser element being tubes, tubular elements, cylindrical elements or set of tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
    • B01D61/14—Ultrafiltration; Microfiltration
    • B01D61/20—Accessories; Auxiliary operations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D65/00—Accessories or auxiliary operations, in general, for separation processes or apparatus using semi-permeable membranes
    • B01D65/08—Prevention of membrane fouling or of concentration polarisation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D65/00—Accessories or auxiliary operations, in general, for separation processes or apparatus using semi-permeable membranes
    • B01D65/02—Membrane cleaning or sterilisation ; Membrane regeneration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/20—Mixing gases with liquids
    • B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
    • B01F23/231—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids by bubbling
    • B01F23/23105—Arrangement or manipulation of the gas bubbling devices
    • B01F23/2311—Mounting the bubbling devices or the diffusers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/20—Mixing gases with liquids
    • B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
    • B01F23/231—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids by bubbling
    • B01F23/23105—Arrangement or manipulation of the gas bubbling devices
    • B01F23/2312—Diffusers
    • B01F23/23121—Diffusers having injection means, e.g. nozzles with circumferential outlet
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/20—Mixing gases with liquids
    • B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
    • B01F23/231—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids by bubbling
    • B01F23/23105—Arrangement or manipulation of the gas bubbling devices
    • B01F23/2312—Diffusers
    • B01F23/23123—Diffusers consisting of rigid porous or perforated material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/10—Maintenance of mixers
    • B01F35/13—Maintenance of mixers using one or more of the components of the mixture to wash-out the mixer
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
    • C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/02—Aerobic processes
    • C02F3/12—Activated sludge processes
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/02—Aerobic processes
    • C02F3/12—Activated sludge processes
    • C02F3/1236—Particular type of activated sludge installations
    • C02F3/1268—Membrane bioreactor systems
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/02—Aerobic processes
    • C02F3/12—Activated sludge processes
    • C02F3/20—Activated sludge processes using diffusers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2311/00—Details relating to membrane separation process operations and control
    • B01D2311/26—Further operations combined with membrane separation processes
    • B01D2311/2688—Biological processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2313/00—Details relating to membrane modules or apparatus
    • B01D2313/26—Specific gas distributors or gas intakes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2315/00—Details relating to the membrane module operation
    • B01D2315/06—Submerged-type; Immersion type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2321/00—Details relating to membrane cleaning, regeneration, sterilization or to the prevention of fouling
    • B01D2321/18—Use of gases
    • B01D2321/185—Aeration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F2101/00—Mixing characterised by the nature of the mixed materials or by the application field
    • B01F2101/305—Treatment of water, waste water or sewage
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/20—Mixing gases with liquids
    • B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
    • B01F23/231—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids by bubbling
    • B01F23/23105—Arrangement or manipulation of the gas bubbling devices
    • B01F23/2311—Mounting the bubbling devices or the diffusers
    • B01F23/23113—Mounting the bubbling devices or the diffusers characterised by the disposition of the bubbling elements in particular configurations, patterns or arrays
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/20—Mixing gases with liquids
    • B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
    • B01F23/231—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids by bubbling
    • B01F23/23105—Arrangement or manipulation of the gas bubbling devices
    • B01F23/2312—Diffusers
    • B01F23/23123—Diffusers consisting of rigid porous or perforated material
    • B01F23/231231—Diffusers consisting of rigid porous or perforated material the outlets being in the form of perforations
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2303/00—Specific treatment goals
    • C02F2303/20—Prevention of biofouling
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00—Technologies for wastewater treatment
    • Y02W10/10—Biological treatment of water, waste water, or sewage

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Microbiology (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Aeration Devices For Treatment Of Activated Polluted Sludge (AREA)
  • Activated Sludge Processes (AREA)
EP13846346.8A 2012-10-19 2013-10-17 Air diffusion device, air diffusion method, and water treatment device Withdrawn EP2910530A4 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2012231888 2012-10-19
PCT/JP2013/078182 WO2014061737A1 (en) 2012-10-19 2013-10-17 Air diffusion device, air diffusion method, and water treatment device

Publications (2)

Publication Number Publication Date
EP2910530A1 EP2910530A1 (en) 2015-08-26
EP2910530A4 true EP2910530A4 (en) 2015-11-04

Family

ID=50488297

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13846346.8A Withdrawn EP2910530A4 (en) 2012-10-19 2013-10-17 Air diffusion device, air diffusion method, and water treatment device

Country Status (6)

Country Link
US (1) US20150265980A1 (en)
EP (1) EP2910530A4 (en)
JP (2) JPWO2014061737A1 (en)
KR (2) KR20150052307A (en)
CN (1) CN104870377B (en)
WO (1) WO2014061737A1 (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015231592A (en) * 2014-06-09 2015-12-24 三菱レイヨン株式会社 Method for operating gas diffuser
JP2016028806A (en) * 2014-07-15 2016-03-03 三菱レイヨン株式会社 Air diffuser, and water treatment apparatus and method for operating the same
JP2017127844A (en) * 2016-01-22 2017-07-27 住友電気工業株式会社 Diffuser pipe and filtration unit
GB2554431B (en) * 2016-09-27 2018-08-22 Aqualiner Ltd A pig for use in a system for lining ducts
KR101905264B1 (en) * 2016-09-30 2018-10-05 롯데케미칼 주식회사 Apparatus for purifying water
JP2018167184A (en) * 2017-03-30 2018-11-01 三菱ケミカル株式会社 Aeration header, aeration apparatus, membrane module unit, and water treatment method
DE202017002548U1 (en) 2017-05-14 2017-07-06 Martin Stachowske Arrangement for the aeration of liquids with a tubular aerator
DE102018111377A1 (en) 2017-05-14 2018-11-15 Martin Stachowske Arrangement for the aeration of liquids with a tubular aerator
JP7311242B2 (en) * 2017-11-30 2023-07-19 三菱ケミカル株式会社 Air diffuser, air diffusion method, and water treatment device
JP6740475B2 (en) * 2018-03-27 2020-08-12 三菱ケミカルアクア・ソリューションズ株式会社 Air diffuser with header and membrane separation activated sludge device
JP2019188273A (en) * 2018-04-19 2019-10-31 株式会社明電舎 Washing method of diffuser tube and membrane separation apparatus
CN113766967B (en) * 2019-05-30 2024-02-23 住友电气工业株式会社 Hollow fiber membrane, filtration module, and drainage treatment device
JP6997479B1 (en) 2021-05-06 2022-02-15 新日本フエザーコア株式会社 Water purification treatment system

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB806670A (en) * 1955-09-02 1958-12-31 Industrikemiska Ab Improvements in or relating to plants for the aeration of liquids
DE2450837A1 (en) * 1973-10-25 1975-04-30 Franklin Carr Price METHOD AND DEVICE FOR INTRODUCING GASES INTO A MASS OF LIQUID
US20030001295A1 (en) * 2000-12-04 2003-01-02 Yasunobu Okajima Air diffuser and flushing method thereof

Family Cites Families (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5429818B2 (en) * 1972-09-27 1979-09-26
SE387854B (en) * 1973-11-21 1976-09-20 O L Lindblad INFLUENCE BODY, PREFERABLY INTENDED FOR USE IN CONNECTION WITH VEHICLE SAFETY BELTS
JPS5445023Y2 (en) * 1975-08-13 1979-12-24
JPS5319359U (en) * 1976-07-29 1978-02-18
JPS60179397U (en) * 1984-05-09 1985-11-28 株式会社　若土 Diffuser pipe device for aeration tank
JPH081185A (en) * 1994-06-21 1996-01-09 Ooshio Kogyo Kk Underwater air supply pipe device in treatment tank
CN1204961A (en) * 1996-09-26 1999-01-13 老笃制药株式会社 Eyedrops
JP2000271582A (en) * 1999-03-26 2000-10-03 Matsushita Electric Works Ltd Septic tank
JP3784236B2 (en) 2000-03-31 2006-06-07 株式会社クボタ Air diffuser for submerged membrane separator
JP3784252B2 (en) * 2000-12-22 2006-06-07 株式会社クボタ Air diffuser
JP2002307091A (en) 2001-04-16 2002-10-22 Kubota Corp Cleaning method of diffuser
CN2616531Y (en) * 2003-04-09 2004-05-19 天津天大天久科技股份有限公司 Sewage treatment middle-water reuse aeration tank aeration apparatus
JP2005138015A (en) * 2003-11-06 2005-06-02 Kubota Corp Aeration device
JP4274903B2 (en) * 2003-11-06 2009-06-10 株式会社クボタ Cleaning method for air diffuser
JP2006116388A (en) * 2004-10-20 2006-05-11 Kubota Corp Air diffuser and its operating method
KR100778491B1 (en) * 2006-12-29 2007-11-28 주식회사 케이엠에스 Diffuser for aeration
JP5273935B2 (en) * 2007-03-29 2013-08-28 株式会社クボタ Water collector
JP2008302294A (en) * 2007-06-07 2008-12-18 Kobelco Eco-Solutions Co Ltd Biological treatment method and apparatus
JP4969557B2 (en) * 2008-11-21 2012-07-04 株式会社クボタ Air diffuser
JP5532819B2 (en) * 2009-10-28 2014-06-25 三菱レイヨン株式会社 Operation method of air diffuser
WO2011130089A1 (en) * 2010-04-12 2011-10-20 Veolia Water Solutions & Technologies Support Membrane bioreactor having mixed liquor and air conduits in a filtration tank

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB806670A (en) * 1955-09-02 1958-12-31 Industrikemiska Ab Improvements in or relating to plants for the aeration of liquids
DE2450837A1 (en) * 1973-10-25 1975-04-30 Franklin Carr Price METHOD AND DEVICE FOR INTRODUCING GASES INTO A MASS OF LIQUID
US20030001295A1 (en) * 2000-12-04 2003-01-02 Yasunobu Okajima Air diffuser and flushing method thereof

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2014061737A1 *

Also Published As

Publication number Publication date
KR20150052307A (en) 2015-05-13
JP2018108585A (en) 2018-07-12
WO2014061737A1 (en) 2014-04-24
JPWO2014061737A1 (en) 2016-09-05
CN104870377B (en) 2018-03-13
EP2910530A1 (en) 2015-08-26
KR20170051543A (en) 2017-05-11
US20150265980A1 (en) 2015-09-24
CN104870377A (en) 2015-08-26

Similar Documents

Publication Publication Date Title
EP2910530A4 (en) Air diffusion device, air diffusion method, and water treatment device
ZA201509359B (en) Water treatment method, and water treatment system
HK1209888A1 (en) Wagering apparatus, methods and systems
EP2873572A4 (en) Vehicle-mounted-camera cleaning device, and vehicle-mounted-camera cleaning method
AP2014007954A0 (en) Produced water treatment method and treatment device
EP2913310A4 (en) Aeration device, operation method therefor, and water treatment apparatus
GB201218801D0 (en) Device,method and software
EP2869559A4 (en) Decoding device, and decoding method
ZA201401784B (en) Fluid treatment apparatus,system,and methods
EP2871248A4 (en) Heat treatment method, heat treatment device, and heat treatment system
SG10201501123TA (en) Water treatment device and method
HK1202854A1 (en) Wastewater treatment device, wastewater treatment method, wastewater treatment system, control device and control method
SG11201501468YA (en) Water treatment method and apparatus therefor
SG11201402298WA (en) Water treatment device and method
EP2857052A4 (en) Hemodialysis device operation method and hemodialysis device
EP2914008A4 (en) Decoding device, decoding method, and program
EP2895686A4 (en) Well treatment device, method, and system
EP2806671A4 (en) Paging method and device
SG11201500668VA (en) Desalination treatment device, and operation method for desalination treatment device
EP2586748A4 (en) Freshwater-generating device, and freshwater-generating method
EP2871810A4 (en) Announcement method, device and system
EP2793746A4 (en) Medical device, method and system thereof
EP2898939A4 (en) Flue gas treatment method and flue gas treatment device
ZA201404067B (en) Water treatment device and method
EP2821920A4 (en) Image-transmission method, program, and device

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20150416

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

RA4 Supplementary search report drawn up and despatched (corrected)

Effective date: 20151007

RIC1 Information provided on ipc code assigned before grant

Ipc: C02F 3/12 20060101ALI20151001BHEP

Ipc: C02F 3/20 20060101AFI20151001BHEP

Ipc: B01D 65/08 20060101ALI20151001BHEP

Ipc: B01D 61/20 20060101ALI20151001BHEP

Ipc: B01F 15/00 20060101ALI20151001BHEP

Ipc: B01D 65/02 20060101ALI20151001BHEP

Ipc: B01F 3/04 20060101ALI20151001BHEP

Ipc: C02F 1/44 20060101ALI20151001BHEP

DAX Request for extension of the european patent (deleted)
RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: MITSUBISHI CHEMICAL CORPORATION

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: MITSUBISHI CHEMICAL CORPORATION

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN

17Q First examination report despatched

Effective date: 20190304

18W Application withdrawn

Effective date: 20190318